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Stockholders’ Equity (Tables) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2018 | Dec. 31, 2017
Equity [Abstract] |  |
Schedule of Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques | The fair value of share-based awards was estimated using the Black-Scholes model with the following weighted-average assumptions for the three months ended March 31, 2018 and 2017:
|  | 2018 |  |  | 2017 |
Dividend yield |  |  | 0.00 |  |  |  | 0.00 |
Risk-free interest rate |  |  | 2.86-2.94 | % |  |  | .79-2.32 | %
Expected volatility |  |  | 137.2-137.3 | % |  |  | 67.3-139.5 | %
Expected life (in years) |  |  | 10 |  |  |  | 10 |
| The fair value of share-based awards was estimated using the Black-Scholes model with the following weighted-average assumptions for the years ended December 31, 2017 and 2016: Assumptions:
|  | 2017 |  |  | 2016 |
Dividend yield |  |  | 0.00 |  |  |  | 0.00 |
Risk-free interest rate |  |  | 1.91-2.45 | % |  |  | 1.13-1.57 | %
Expected volatility |  |  | 115.9-139 | % |  |  | 111.5-132.4 | %
Expected life (in years) |  |  | 5-10 |  |  |  | 5-10 |
Schedule of Stock Option Activity |  | Option activity for the year ended December 31, 2017 was as follows:
|  |  |  |  | Weighted Average |  |  | Weighted Average |  |  |  |
|  |  |  |  | Exercise |  |  | Remaining |  |  | Aggregate |
|  |  |  |  | Price |  |  | Contractual |  |  | Intrinsic |
|  | Options |  |  | ($) |  |  | Life (Yrs.) |  |  | Value ($) |
Options outstanding at December 31, 2016 |  |  | 101,188 |  |  |  | 8.39 |  |  |  | 9.29 |  |  |  | - |
Granted |  |  | 213,750 |  |  |  | 2.95 |  |  |  | 7.72 |  |  |  | 16,600 |
Exercised |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |
Forfeited or cancelled |  |  | -15,000 |  |  |  | 5.43 |  |  |  | - |  |  |  | - |
Options outstanding at December 31, 2017 |  |  | 299,938 |  |  |  | 8.39 |  |  |  | 7.33 |  |  |  | 16,600 |
Options expected to vest in the future as of December 31, 2017 |  |  | 214,324 |  |  |  | 4.55 |  |  |  | 6.88 |  |  |  | 16,000 |
Options exercisable at December 31, 2017 |  |  | 85,614 |  |  |  | 4.49 |  |  |  | 7.96 |  |  |  | 600 |
Options vested, exercisable, and options expected to vest at December 31, 2017 |  |  | 299,938 |  |  |  | 4.57 |  |  |  | 7.33 |  |  |  | 16,600 |

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- Definition Tabular disclosure of the inputs and valuation techniques used to measure fair value, and a discussion of changes in valuation techniques and related inputs, if any, applied during the period to each separate class of assets, liabilities, and financial instruments classified in shareholders' equity that are measured on a recurring and/or nonrecurring basis. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb) -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258 + Details
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- Definition Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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